Actually, the gospel is described for us in 1 Corinthians 15:1-4. The gospel is simply about believing and not doing. Just reread 1 Corinthians 15:1-4 and you will see it is all about a belief and not doing anything.
To be a doer of the Word is to obey the various instructions in God’s Word (i.e., the Bible). This is what we read about. For example: A man who bridleth not his tongue, their religion is in vain (James 1:26). Pure religion and undefiled is to visit the fatherless and widows in their affliction (James 1:27). Do not have respect of persons in favoring the rich brethren over any poor brethren (James 2:1-7, which is continued in the use of other word throughout the chapter). These are all things that you do.
The confusion on your part only arises because of the corrupt Modern Translations that have flooded the market.
In Genesis 22:2, “offer him up” (KJB) is changed to: “sacrifice” in Modern Bibles (CEV, ERV, GW, TLB, MSG, NOG, NIV, NLT). God told Abraham to offer up Isaac and not to sacrifice him. So if certain Modern bibles are correct, the dilemma here is that either:
- Abraham did not obey God or:
- God changed His Word.
In other words, Abraham did obey by simply offering up his Son. That was the real instructions. The Modern Versions pervert this truth.